杰克逊:是否有一种方法可以忽略布尔反序列化中的0/1? [英] Jackson: Is there a way to ignore 0/1 on Boolean deserialization?

问题描述

我有一个JSON对象，该对象具有Boolean属性，在反序列化期间只需要允许true或false.

I have a JSON object with a Boolean property that needs to allow only true or false during the deserialization.

任何与true和false不同的值都将引发异常.

Any value different of true and false should throw an exception.

我该怎么做?

例如:

有效的json:

{
  "id":1,
  "isValid":true
}

无效的json:

{
  "id":1,
  "isValid":1
}

---

更新

我尝试了@MichałZiober的建议，效果很好.

---

Update

I tried what @Michał Ziober proposed and it worked fine.

当我使用Webflux实现Spring应用程序时，我只需要以不同的方式进行配置.我在这里发布了我所做的事情:

As I'm implementing a Spring application (with Webflux) I just had to configure in a different way. I'm posting here what I did:

• 创建从DelegatingWebFluxConfiguration
扩展的Configuration类
• 覆盖configureHttpMessageCodecs方法，在ObjectMapper上设置属性

• Create a Configuration class extending from DelegatingWebFluxConfiguration
• Override the configureHttpMessageCodecs method setting the property on ObjectMapper

@Configuration
public class JacksonConfig extends DelegatingWebFluxConfiguration {

    @Override
    protected void configureHttpMessageCodecs(ServerCodecConfigurer configurer) {
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.disable(MapperFeature.ALLOW_COERCION_OF_SCALARS);
        objectMapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);

        configurer.defaultCodecs()
                .jackson2JsonDecoder(new Jackson2JsonDecoder(objectMapper));
    }
}

推荐答案

您需要禁用上面的代码显示:

线程主"中的异常 com.fasterxml.jackson.databind.exc.MismatchedInputException:无法 类型java.lang.Boolean的强制数字(1)(启用 MapperFeature.ALLOW_COERCION_OF_SCALARS允许)位于[来源: (文件);行:3，列:14](通过参考链: Pojo ["isValid"])在 com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:63)

Exception in thread "main" com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot coerce Number (1) for type java.lang.Boolean (enable MapperFeature.ALLOW_COERCION_OF_SCALARS to allow) at [Source: (File); line: 3, column: 14] (through reference chain: Pojo["isValid"]) at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:63)

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